How to scan multiple pages w/o ADF to 1 PDF in HP6700 officejet

I used to be able to do this on an older HP officejet, but I am having trouble doing this on the new HP 6700 officejet.

I want to scan multiple pages like small receipts and documents that cannot confidently go into the automatical document feeder. I want all of them scanned to 1 pdf. On an older HP officejet's software, I would do:

Re: How to scan multiple pages w/o ADF to 1 PDF in HP6700 officejet

I have installed an HP 6700 all ino one printer and need to scan to PDF but the option isn't available. I have the latest drivers installed. How do I get this to appear in the file type list? Do I need some additional software to do this?